Liquid-fuel furnace



July H. JUNKERS LIQUID FUEL FURNACE Filed Jan. 15. 1925.

aJun/rer's iffy.

LHJLILJULJLI Patented July 26, 1927.

HUGO J'UNKERS, F

AAGHEN-FRANKENBURG, GERMANY.

LIQUID-FUEL summon.

Application filed January 15, 1925, Serial No. 2,599, and

, invention refers to furnaces and more especially to liquid fuel burners adapted for use in furnaces for household use, including stoves and kitchen ranges, in which the fuel,

instead of being injected together with air horizontal 5 and i right angles the air flowing past such surfaces.

7 of combustion.

or steam, is distributed on suitablyarranged surfaces and evaporated for combustipn with t is an ob furnace ject of my invention to provide a this kind which can be operated more easily and has a higher etiicien'cy than similar furnaces hitherto devised.

In the, burner according to the present invention a grate mounted preferably in position .in a vertical air flue is supplied with liquid fuel by capillary action, members, which may consist of porous material such as for instance earthenware, being connected with such grate and serving for conveying the liquid fuel to the places.

Preferably the grateis perforate and made integral with the capillary members, and in a preferred form of my invention several such members spread apart having the form of an inverted U are supported in troughs supplied with liquid fuel andha-ve formed their upper edges with serrated lateral extensions,'the extensions of a plurality of such members forming a kind of perforate grate.

In the drawings affixed to this specifica tion and forming part thereof several forms of a burner embodying my invention are illustrated diagrammatically by way of'ex- "am le.- p

n the drawings Fig. 1 is a vertical section and Fig. 2 is a horizontal section of the first form,

Fig. 3 being a vertical section the grate elements.

Fig. 4 is a vertical section and Fig. 5 a plan view of a second form,

Fig. 6 being a partial vertical section at to Fig. 4 with the furnace Walls of some of omitted.

Figs. 7, 8 and 9 are vertical sections of these further modifications;

operated air valve 6 and between the two a through the slot joining members,

Fig. 10 is anend view of stillanother in Germany March 7, 1924.

row (if narrow apertures 7 through which pipes 8 having mounted extend fuel supply on their outer ends a channeled fuelcontainer 9 fed by a pipe 10. The inner end of each pipe 8 forms part of a narrow trough 11, the end walls of which are fitted with supports 12. Brackets 13 mounted on the furnace walls serve to In 'each trough is inserted from above a plate-shaped grate member 14 of porous material, for-instance earthenware, having lateral extensions 15 having about the outer appearance of rac'ks.' Four such troughs 11 and members '14 are arranged side by side in the air flue 2, the lateral extensions 15 of adjoining members almost contacting with each other and forming a perforate grate extending in the plane of the bottom edge terstices left between the members 14, as

in Fig. 3, causes the fuel shown by the arrow on the surface of these members to evaporate and on the grate ormed by the lateral projections 15 a mixture. of fuel and air is formed which burns in the airintroduced In the modification shown in Figs. 4-6 t e porous members 17 have the form of inverted Us, their depending arms 18 being supported on ledges 19 forming part of the side walls of a pair of separate extendingat right angles to the bars which are again fitted with rows of lateral extensions 21 on their top edges. Here the air causing evaporation of the fuel flows in horizontal direction between the pairs of arms 18 and vertically upwards between adas shown by the arrows in grate mem- Flg.

Figs. 7, 8 and 9 show simpler forms of porous grates.

In the form disclosed in Fig, 7 a perforate earthenware plate 22 has a porous arm 23 formed on its bottom surface, this arm 1 extending into a trough 24, while the bottom plate 22 is submerged edge of the inclined support the troughs 11;

formed on either side of its top edge rows of troughs 20 in liquid fuel contained in another trough 25, so that fuel is conveyed by capillary action in two places.

Fig. 8 illustrates a horizontal plate-shaped perforate grate 26 with a plurality of porous arms 27 extending into troughs 28.

In Fig. 9 is disclosed a vertically mount-- I ed perforate grate 29 having its bottom edge 30 filled with fuel, an'

supported in a trough anglehaped arm or arms 31 fed by another trough 32 supplying fuel to the upper portion of the grate.

Fig. 10 shows a modified form of the porous member disclosed in Fig. 4, three arms 33 being supported in three separate troughs 34 and offering to the air ofevaporation two parallel horizontal passages.

I wish it to be understood that I do not desire to be limited to the exact details of construction shown and described, for 0hvious modifications will occur to a person skilled in the art. a r

I claim 1. Liquidfuel burner comprising a liquid fuel supply and a'grate bar of capillary structure extending substantially in horizontal position above. and spaced from said fuel supply, a substantially vertical extension ofsaid bar also having capillary structure extending into 'said fuel supply and serving' to feed lie' d fuel to said bar.

masses 2. Lirpuid fuel burner comprising a luralityo liquid fuel supplies and grate ars extending substantially in tion above and spaced from said fuel supplies, a substantially vertical extension of horizontal posieach bar having capillary structure extending into one of said fuel supplies.

3. Liquid fuel furnace comprising a plurality of juxtaposed grate bars, teeth-like lateral extensions on said bars, a supply of liquid fuel below and spaced from said bars and an extension of capillary active material on each bar extending into said suppg.

4. iquid fuel furnace comprising a grate bar, a plurality of supplies of liquid fuel below and spaced from said grate bar and a substantially vertical capillary portion of said grate bar having, an indenture forming a plurality of arms, each arm extending into one of said fuel supplies.

p 5. Liquid fuel furnace comprising a grate bar, a plurality of supplies of liquid fuel below said bar, spaced apart to allow air to ascend between them and a plurality of extensions of capillary material of sald grate 'bar each extension extending into one of said fuel supplies. 7

In testimony whereof I atfix my signature.

- Hueo JUNKERS; 

